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<head><meta charset="utf-8"><title>meeting 2021-07-07 · t-compiler/wg-rfc-2229 · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/index.html">t-compiler/wg-rfc-2229</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html">meeting 2021-07-07</a></h3>

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<a name="245235066"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235066" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235066">(Jul 07 2021 at 20:04)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/86588">https://github.com/rust-lang/rust/pull/86588</a></p>



<a name="245235359"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235359" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235359">(Jul 07 2021 at 20:07)</a>:</h4>
<p>updates from this week:</p>



<a name="245235371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235371">(Jul 07 2021 at 20:07)</a>:</h4>
<ul>
<li>performance regression to be investigated</li>
</ul>



<a name="245235379"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235379" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235379">(Jul 07 2021 at 20:07)</a>:</h4>
<ul>
<li>reference PR is awaiting review</li>
</ul>



<a name="245235401"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235401" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235401">(Jul 07 2021 at 20:07)</a>:</h4>
<ul>
<li>work on insignificant dtors is unblocked</li>
</ul>



<a name="245235406"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235406" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235406">(Jul 07 2021 at 20:07)</a>:</h4>
<ul>
<li>many PRs awaiting bors</li>
</ul>



<a name="245235440"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235440" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235440">(Jul 07 2021 at 20:08)</a>:</h4>
<p><a href="https://github.com/rust-lang/project-rfc-2229/issues/52">https://github.com/rust-lang/project-rfc-2229/issues/52</a></p>



<a name="245235589"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235589" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235589">(Jul 07 2021 at 20:09)</a>:</h4>
<p><span class="user-mention silent" data-user-id="281950">Aman Arora</span> <a href="#narrow/stream/189812-t-compiler.2Fwg-rfc-2229/topic/meeting.202021-06-30/near/244503920">said</a>:</p>
<blockquote>
<div class="codehilite" data-code-language="Rust"><pre><span></span><code><span class="k">fn</span> <span class="nf">bar</span><span class="p">(</span><span class="n">s</span>: <span class="nb">Box</span><span class="o">&lt;</span><span class="nb">String</span><span class="o">&gt;</span><span class="p">)</span><span class="w"> </span>-&gt; <span class="nc">impl</span><span class="w"> </span><span class="nb">FnMut</span><span class="p">()</span><span class="w"> </span><span class="p">{</span><span class="w"></span>
<span class="w">    </span><span class="kd">let</span><span class="w"> </span><span class="k">mut</span><span class="w"> </span><span class="n">t</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">s</span><span class="p">,</span><span class="w"> </span><span class="mi">0</span><span class="p">);</span><span class="w"></span>
<span class="w">    </span><span class="kd">let</span><span class="w"> </span><span class="n">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="cp">#[rustc_capture_analysis]</span><span class="w"> </span><span class="k">move</span><span class="w"> </span><span class="o">||</span><span class="w"> </span><span class="n">t</span><span class="p">.</span><span class="mf">0.</span><span class="n">truncate</span><span class="p">(</span><span class="mi">0</span><span class="p">);</span><span class="w"></span>
<span class="w">    </span><span class="n">c</span><span class="w"></span>
<span class="p">}</span><span class="w"></span>
</code></pre></div>
</blockquote>



<a name="245235677"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-07-07/near/245235677" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-07-07.html#245235677">(Jul 07 2021 at 20:10)</a>:</h4>
<p><a href="https://hackmd.io/D3I_gwvuT-SPnJ22tgJumw">https://hackmd.io/D3I_gwvuT-SPnJ22tgJumw</a></p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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